diff --git a/install/lib/installer_base.lib.php b/install/lib/installer_base.lib.php
index 0998cf84356e1bd2b93c3936611d4719b935f445..e3a530b9a85114693b6cb30a045f8cbca661ca97 100644
--- a/install/lib/installer_base.lib.php
+++ b/install/lib/installer_base.lib.php
@@ -1597,7 +1597,8 @@ class installer_base {
 			if(!is_user($apps_vhost_user)) caselog($command.' &> /dev/null 2> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");
 
 
-			$command = 'adduser '.$conf['nginx']['user'].' '.$apps_vhost_group;
+			//$command = 'adduser '.$conf['nginx']['user'].' '.$apps_vhost_group;
+			$command = 'usermod -a -G '.$apps_vhost_group.' '.$conf['nginx']['user'];
 			caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");
 
 			if(!@is_dir($install_dir)){